Strategy for Creating Highly Productive Forms of Small Radish Adapted for Cultivation under Artificial Light Conditions

2019 ◽  
Vol 45 (2) ◽  
pp. 142-146
Author(s):  
A. A. Kochetov ◽  
N. G. Sinyavina
Keyword(s):  
Artificial Light ◽  
Light Conditions ◽  
Small Radish

scholarly journals The strategy of creating highly productive forms of radish, adapted for cultivation under artificial light conditions

2019 ◽  
Vol 1 (1) ◽  
pp. 29-33 ◽  
Author(s):  
A. A. Kochetov ◽  
N. G. Sinyavina
Keyword(s):  
Small Volume ◽  
Morphological Characteristics ◽  
Intraspecific Diversity ◽  
Artificial Light ◽  
Light Conditions ◽  
Early Maturity ◽  
Artificial Lighting ◽  
First And Second Generation ◽  
Incandescent Lamps ◽  
Different Origin

The strategy of creating new radish forms adapted for cultivation under artificial lighting was developed and implemented. It was based on the original methodology of obtaining transgressive forms of various cultures with a predictable complex of economically valuable properties. Plants were grown in controlled conditions, under incandescent lamps DNAZ-400 (12 hours photoperiod, irradiation of 40-60 W/m2 PAR), in a small volume of the root medium. At the first stage, the intraspecific diversity of radish (26 varieties of different origin) under artificial lighting has been studied. Differences between varieties were determined for the complex of selective-valuable characteristics (early maturity, productivity, morphological characteristics). The most productive varieties are revealed, as well as varieties donors of economically valuable properties that are realized under artificial lighting at a short day and high temperature. Parent pairs have been selected for the subsequent receipt of highly productive transgressive forms using the original breeding methodology. The evaluation of hybrids of the first and second generation showed the presence of heterosis on the mass of the root up to 230% in various combinations of hybridization and revealed promising transgressive forms.

scholarly journals Image processing algorithm to estimate ice-plant leaf area from RGB images under different light conditions

2021 ◽  
Vol 924 (1) ◽  
pp. 012013
Author(s):  
S Islam ◽  
M N Reza ◽  
M Chowdhury ◽  
M N Islam ◽  
M Ali ◽  
...  
Keyword(s):  
Image Processing ◽  
Leaf Area ◽  
Light Condition ◽  
Processing Algorithm ◽  
Artificial Light ◽  
Light Conditions ◽  
Image Processing Algorithm ◽  
Ice Plant ◽  
Plant Leaf ◽  
Rgb Images

Abstract The productivity of horticultural crops in an artificial light condition are highly influenced by the structure of plant and the area coverage. Accurate measurement of leaf area is very important for predicting plant water demand and optimal growth. In this paper, we proposed an image processing algorithm to estimate the ice-plant leaf area from the RGB images under the artificial light condition. The images were taken using a digital camera and the RGB images were transformed to grayscale images. A binary masking was applied from a grayscale image by classifying each pixel, belonging to the region of interest from the background. Then the masked images were segmented and the leaf region was filled using region filling technique. Finally, the leaf area was calculated from the number of pixel and using known object area. The experiment was carried out in three different light conditions with same plant variety (Ice-plant, Mesembryanthemum crystallinum). The results showed that the correlation between the actual and measured leaf area was found over 0.97 (R2:0.973) by our proposed method. Different light condition also showed significant impact on plant growth. Our results inspired further research and development of algorithms for the specific applications.

scholarly journals Hydrogen production using Purple Non-Sulfur Bacteria (PNSB) cultivated under natural or artificial light conditions with synthetic or fermentation derived substrates

2014 ◽  
Author(s):  
Alessandra Adessi
Keyword(s):  
Hydrogen Production ◽  
Production Process ◽  
Low Cost ◽  
Rhodopseudomonas Palustris ◽  
Artificial Light ◽  
Light Conditions ◽  
High Hydrogen ◽  
Sunlight Irradiation ◽  
Sulfur Bacteria ◽  
Vegetable Wastes

The aim of this thesis was to verify the feasibility of the hydrogen production process with purple non sulfur bacteria both under sunlight irradiation in an up-scaled system and with the use of low cost substrates. Among the products offermentations tested the best results were obtained with a medium derived from vegetable wastes. The use of a genetically modified strain of Rhodopseudomonas palustris insensitive to ammonium opened the way towards the use of wastes with attainment of high hydrogen yields also in inhibiting conditions. The experimentation carried out under natural irradiation demonstrated the full feasibility of the process using sunlight instead of artificial light in a semi-pilot reactor: the production rates were the highest so far reported for comparable outdoor systems.

scholarly journals Learning to feed in the dark: how light level influences feeding in the hawkmoth Manduca sexta

2021 ◽  
Vol 17 (9) ◽  
pp. 20210320
Author(s):  
Tanvi Deora ◽  
Mahad A. Ahmed ◽  
Bingni W. Brunton ◽  
Thomas L. Daniel
Keyword(s):  
Motor Control ◽  
Manduca Sexta ◽  
Three Dimensional ◽  
Light Level ◽  
Artificial Light ◽  
Motion Sensors ◽  
Light Conditions ◽  
Light At Night ◽  
Light Levels ◽  
Artificial Flowers

Nocturnal insects like moths are essential for pollination, providing resilience to the diurnal pollination networks. Moths use both vision and mechanosensation to locate the nectary opening in the flowers with their proboscis. However, increased light levels due to artificial light at night (ALAN) pose a serious threat to nocturnal insects. Here, we examined how light levels influence the efficacy by which the crepuscular hawkmoth Manduca sexta locates the nectary. We used three-dimensional-printed artificial flowers fitted with motion sensors in the nectary and machine vision to track the motion of hovering moths under two light levels: 0.1 lux (moonlight) and 50 lux (dawn/dusk). We found that moths in higher light conditions took significantly longer to find the nectary, even with repeated visits to the same flower. In addition to taking longer, moths in higher light conditions hovered further from the flower during feeding. Increased light levels adversely affect learning and motor control in these animals.

scholarly journals Quantifying the efficiency of photoprotection

2017 ◽  
Vol 372 (1730) ◽  
pp. 20160393 ◽  
Author(s):  
Alexander V. Ruban
Keyword(s):  
Protein Biosynthesis ◽  
Pulse Amplitude ◽  
Crop Productivity ◽  
Emerging Technology ◽  
Plant Performance ◽  
Artificial Light ◽  
The Novel ◽  
Light Conditions ◽  
The Past ◽  
Modulated Chlorophyll Fluorescence

A novel emerging technology for the assessment of the photoprotective ‘power’ of non-photochemical fluorescence quenching (NPQ) has been reviewed and its insightful outcomes are explained using several examples. The principles of the method are described in detail as well as the work undertaken for its justification. This pulse amplitude modulated chlorophyll fluorescence approach has been applied for the past 5 years to quantify the photoprotective effectiveness of the NPQ and the light tolerance in Arabidopsis plants grown under various light conditions, during ontogenetic development as well as in a range of mutants impaired in carotenoid and protein biosynthesis. The future applications of this approach for the assessment of crop plant light tolerance are outlined. The perspective of obtaining detailed information about how the extent of photoinhibition and photoprotection can affect plant development, growth and productivity is highlighted, including the potential for us to predict the influence of environmental elements on plant performance and yield of crops. The novel methodology can be used to build up comprehensive light tolerance databases for various current and emerging varieties of crops that are grown outdoors as well as in artificial light environments, in order to optimize for the best environmental conditions that enable high crop productivity. This article is part of the themed issue ‘Enhancing photosynthesis in crop plants: targets for improvement’.

scholarly journals Seasonal Variations of Melatonin Secretion in Young Females under Natural and Artificial Light Conditions in Fukuoka, Japan

2007 ◽  
Vol 26 (2) ◽  
pp. 209-215 ◽  
Author(s):  
Tomoko Ueno-Towatari ◽  
Kyoko Norimatsu ◽  
Krzysztof Blazejczyk ◽  
Hiromi Tokura ◽  
Takeshi Morita
Keyword(s):  
Seasonal Variations ◽  
Artificial Light ◽  
Light Conditions ◽  
Melatonin Secretion ◽  
Young Females

scholarly journals Биологические особенности редиса (Raphanus sativus L.) при выращивании в условиях интенсивной светокультуры

2019 ◽  
Author(s):  
A.B. Kurina ◽  
A.M. Artemyeva ◽  
N.G. Sinyavina ◽  
A.A. Kochetov ◽  
G.G. Panova
Keyword(s):  
Raphanus Sativus ◽  
Culture Conditions ◽  
High Variability ◽  
Light Conditions ◽  
High Productivity ◽  
Biological Features ◽  
Raphanus Sativus L ◽  
Intense Light ◽  
Compact Rosette ◽  
Small Radish

Описаны биологические особенности редиса (Raphanus sativus L.) коллекции ВИР в условиях интенсивной светокультуры. Результаты свидетельствуют о высоком разнообразии сортовой реакции редиса на выращивание в ИС. Определена амплитуда изменчивости основных морфологических, фенологических признаков и продуктивности в зависимости от сортотипа. Выделены источники хозяйственно ценных признаков для селекции.The present study describes biological features of small radish (Raphanus sativus L.) grown under the intense light culture conditions. Results, obtained using regulated system, demonstrated high variability of reaction to intense light conditions among the varieties of small radish. Amplitude of variability of the main morphological, phenological traits and productivity depending on variety type, was assessed. Samples of small radish, which can be potential sources of economic-valuable traits for future breeding (such as resistance to bolting under the intense light culture, compact rosette, high productivity and marketability) were identified.

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